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Old 02-15-2012, 02:16 PM
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Yet another TPMS thread...

I know, it's yet another TPMS question... But I wasn't able to find these exact circumstances with other users...

Ok... So I got a new set of wheels/tires from DTD. They sent the wrong lugnut size, so I went to a retail DT store to get the right lug size and also just had them put them on the vehicle since I was there. Once the new wheels/tires were on, I had them throw the 4 old wheel/tires into the back of the jeep. Since I went to a 33" GY DT, I had them set them to 32psi.

Once the new wheels were on, the guys at DT said they couldn't get a signal from the TPMS sensor in the new wheels. However, neither was my TPMS alarm going off.

My question is this, could having the tires with the old TPMS sensors in the back of the jeep somehow affect the new sensors or computer?
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Old 02-15-2012, 02:29 PM   #2

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Not sure but I thought the wheels had to be mounted and turning for the sensors to work.

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Old 02-15-2012, 02:36 PM   #3
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I know the tires don't have to be turning to be read by the system.My spare on back of jeep had the air let out of it and it turned on the tire warning light.
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Old 02-15-2012, 02:38 PM   #4
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Originally Posted by basecamper View Post
Not sure but I thought the wheels had to be mounted and turning for the sensors to work.
Yes they do. After you drive it for at least 20 min. you can air one down and see if you get a light. However, sometimes it could take longer than that. That's what the manual indicates. That's why you don't get the light if the spare is air downed (you're not supposed to anyway). Some have said that the spare tripped it anyway. It shouldn't.
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Old 02-15-2012, 06:48 PM   #5
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I have had it take several days for the low pressure warning to come on after switching sets of wheels and tires. My off-road/winter tire set does not have tpms sensors in the wheels.
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Old 02-15-2012, 07:54 PM   #6
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if you are at 32 psi I think that is still at or slightly above the stock threshold for the TPMS to light up

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